goettel



2 SheetsSheet 1. J. GOETTEL. BICYGLE.

(No M6681.

No. 569,636. Patented Oct. 20, 1896.

2 Sinatra-Sheet 2.

(No Model.)

J. GOETTEL.

BICYCLE.

No. 569,636. Patented Oct. 20, 1896.

, m t v w & r M X UNITED STATES PATENT OEFicE.

JOHN GOETTEL, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO E.BERTRAM NEVTON, OF SAME PLACE.

BICYCLE.

SPECIFICATION forming part of Letters Patent No. 569,636, dated October20, 1896.

Application filed March 21,1896.

To all whom it may concern:

Be it known that I, JOHN GOETTEL, residing in Boston, county of Suffolk,and State of ldassachusetts, have invented an Improvement in Bicycles,of which the following description, in connection with the accompanyi'ngdrawings, is a specification, like letters on the drawings representinglike parts.

This invention relates to bicycles, and has for its object to improvethe construction of the same in a manner as will be described.

In accordance with this invention the pedalshaft has fast on it adriving-wheel of a construction as will be described, and the said driving-wheel cooperates, as will be described, with a counter-shaftprovided with a sprocketwheel. and connected by a link chain to asprocket-wheel on the rear wheel of the bicycle. In order that the linkchain may be made of increased length, the hanger for the sprocket-shaftis located above the hanger for the pedal-shaft and is connectedthereto, and the hanger for the pedal-shaft is also connected bysubstantially short brace-bars with the rearwardly-extendedwheel-supporting bars of the framework, as will be more specificallydescribed.

Figure 1 represents in side elevation a safety-bicycle embodying thisinvention Fig. 2, a detail,'on an enlarged scale, of my improved drivingmechanism; Fig. 3, a transverse section on the lineA A, Fig. 2; andFigs. 4 and 5, details to be referred to.

Referring to Fig. 1, A represents the front wheel, and A the rear wheel,of a safety-bicycle having a framework A which in its generalconstruction approximates the framework commonly employed insafety-bicycles, but difiers therefrom in providing between the wheels AA two hangers, one for the pedal-shaft a and the other for asprocketwheel or counter shaft 0. the hanger for the sprocket-wheelshaft being located above and in a substantially straight line with thesaddle-supporting post or tube a The hanger for the sprocket-wheel shafta has connected to it the rearwardly-extended brace rods or tubes 0;,and the latter are, in accordance with this invention, connected byshortbrace-rods 0. to the hanger for the pedalshaft a. By thisconstruction and arrangefierial No. 584,339. (No model.)

ment the link chain a may be made substan tially as long as that nowcommonly employed in the ordinary frame of safety-bicycle and betterresults are obtained than if the hanger for the sprocket-wheel shaftwere located in a horizontal line or behind the hanger for thepedal-shaft. The pedal-shaft a, in accordance with this invention,extends through the. hub b of a driving-wheel of a construction as willnow be described, which driving-wheel consists, essentially, of acircular plate or disk I), provided with an annular rim b and I on itsinner side near its circumference the said plate or disk is providedwith a series of projections 19 (shown best in Fig. 4,) each of the saidprojections being provided on its front face with an annular socket andwith a centering stem or teat b projecting from the socket, beyond theouter edge of the same, as clearly shown in Fig. 4. The annular socketin the face of the projection 19 is adapted to receive the end of theball I), provided with a cavity or recess 1) for the reception of theprojecting teat h, which latter is made annular in form, so that theball 12 may turn thereon as a center and at the same time turn in theannular groove or socket of the projection 11 The ball Z2 is provided atits opposite end with a recess 11 similar to b, for the reception of aprojecting teat or stem b extended from the center of the cup-shapedsocket in a projection b on a ring 72 which is detachably secured to therim b of the plate or disk I) by suitable bolts h The rim b is providedwith an annular channel or groove into which the rim h fits, so that aflange c on the rim projects over the ring I), and a plate 0' may besecured to the framework of the machine and close the wheel and renderit sub stantially dust-proof.

By reference to Figs. 3 and 4 it will be seen that the studs or teats bI) act as centering studs or teats, and the annular sockets in theprojections 17 h fit over and embrace the ends of the balls 11 so thatthe latter are firmly held against dislodgment, and if for any reasonthe centering-teats b b should become broken the balls 5 would still beretained in their cup-shaped sockets and prevented from dropping out ofplace, which would render the driving mechanism substantially useless.

The halls b have cooperating with them a pinion 0 provided with roundedteeth 0' and concavities 0 which engage the balls Z). The pinion c isrendered fast on the counter-shaft c in any suitable or desired manner,as by the screw 0 and the said shaft has fast on it the sprocket-wheel 0which may be of any suitable or usual construction, about which ispassed the link chain a, which connects the sprocket-wheel c with thesprocket-wheel on the shaft of the rear wheel A. The disk wheel I) mayhave secured to or forming part of it one of the pedal-arms c as shownin Figs. 2 and 3. In practice the projections Z2 with their cup-shapedsockets and teats I)", may be forged or cast in one piece with the diskZ), and the latter may be made thin to insure lightness. So, also, theprojections I), having the cup-shaped sockets, may be made of one piecewith the ring I).

I claim In a safety-bicycle, the combination with a pedal-shaft havinghearings in the framework between the front and rear wheels of the saidbicycle, a driving-wheel fast on the pedal-shaft consisting of the diskZ) provided with an annular rim and on its inner face with projections11 having in their faces ball receiving sockets provided with projectingteats b, a ring 11 secured to said disk and provided with projectionshaving ball-receivin g sockets provided with projecting teats ballsinterposed between said disks and extended into the sockets of the saidprojections to be embraced by the same and provided at their oppositeends with socket-s into which extend the projecting teats b (2 and onwhich the said balls turn, a counter-shaft supported by the frameworkand extended into the drivingwheel, a pinion fast on the counter-shaftwithin the driving-wheel and meshing with the said balls,asprocket-wheel fast on the counter-shaft, a sprocket-wheel fast on therear wheel of the bicycle and a link chain connecting saidsprocket-wheels, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN GOETTEL.

Witnesses:

JAs. I-I. CHURCHILL, J. MURPHY.

